Am I delusional?

Originally Posted by Mt Tam I am

Am I delusional?
My goal:
I am very interested in picking up 18 HP or approximately a 5% increase via an exhaust modification.

My expectations
1) Keeping the db level no greater inside the cabin on longer freeway trips. My better half is less than thrilled with overall cabin noise on the freeway. On the twistys she is fine, so I don't care.

2) It bolts on. No problems. My stock exhaust produces no dash lights, O2 sensors etc. If the mod makes for a tinkerer's delight, then I won't be satisfied.

3) I live in California with a bi-annual registration smog law, so I must meet regulations, without on-off catalysts. This will cost HP but how much?

Things cost what they cost, so let's not make this the issue.

Many of my needs were addressed here in this well-written review. So Stillen would be first choice, but the above-stated requirements trump a brand name.
My Stillen CBE arrived today , pictures!


Thank you.